mathematical expressions makes problem-solving more manageable in later stages of the process. Sandra and the class agree that both comparisons work well, and Sandra uses the opportunity to talk about the capacity of metaphors to explain complex ideas in multiple and personally meaningful ways.
At the end of the lesson, Sandra asks each student to create a new metaphor for the problem-solving process. As with the digestion analogy, students’ new metaphor must mirror the problem-solving process through all its steps.